06104578-n
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| 能量守恒定律, 能量 不 灭 定律, 能量 守恒 定律, 能量不灭定律, 能量 守衡 定律, 能量守衡定律 |
| conservation of energy, law of conservation of energy, first law of thermodynamics |
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the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes |